You know how it is.. you've just realised that holidays will begin soon and that means deadlines will come sooner, so you list them - deadlines for essays, reports, presentations, plus any final exams. Upon working out the rate at which you need to pepare and produce results, you panic, declare sleep is overrated, stock up on easy meals, snacks and, above all, caffeine. But, suddenly, within the first few days of your hermit life, you find that everything is suddenly infintely so much more interesting: the book acting as a platform for your snacks, that had been renewed several times, needs to be read this instant; that hobby you'd been meaning to take up is now something you can explain at great length; you agree that your room needs to be tidier and cleaner.
(Of course, I'm exaggerating; most of my time has been spent feverish with the travel bug.)